Hey no problem.

I have seen those, like this one done by Rad Rides:

http://www.bigstuff3.com/projects/hil2.jpg

But look at those bends. I'm sure a Ferrari style setup would flow better. Plus the fuel flows directly into the intake, not at a 90 degree angle. But again I'm just thinking out loud. Any more cons to this idea?

Mal

And damn those Rad Rides guys never cease to kick the bar 3 notches higher :hail:

You could make an F1 setup like that work at lower pressure, but the 700psi is all to help atomization, cooling, charge consistency etc. From what I have read (racecar engineering) it is very effective but not even remotely needed for a street vehicle.

The biggest issue I see with having the injectors outside the runners like that is low rpm performance would be marginal at best. You would need a super strong airflow signal just to suck the fuel into the chamber at a somewhat consistant rate.

If you're just trying to hide the rails/injectors there are quite a few ways (depending on the manifold style) that would be substantially easier. On a single plane you could put the injectors under the runners, use thread in injectors with stainless lines, and a large fuel block at the back of the manifold. The packaging would take a ton of time but it would be super clean.

being a little crazy myself i'd like to use a composite kinsler, single t/b, and lay the injectors down under it so they shoot about as directly into the ports as possible. Like this: but with the revised injector locations.

http://i26.photobucket.com/albums/c1...s/IMG_0043.jpg

:wow: R/T that is a wicked looking throttle body!

That makes sense I guess, but then I start to think that if a T/B injection system worked at idle, this style M/P injection should work too.

Just for clarification I will describe what I thought I could do:
Using a Victor Ram base weld in and plumb fuel rails that float over the intake runners and mount injectors at the proper angle that point directly to the intake ports.
http://www.edelbrock.com/automotive_...mages/7070.jpg
Then cover everything with a custom plenum with a single throttle body similar to this pic.
http://www.summitracing.com/eventima...ang_engine.jpg
All that would be visible would be the intake and the throttle body (and the turbos and the intake plumbing of course :thumbsup: ).

What do you think? Is it just that the injectors are too far from the intake to idle properly? Or is it too much fuel bouncing off the runners that would cause a problem?

Mal

they run the injectors up there os there is n whre else to put them! lol aso it mens there aren't any odstrutions i the intake tracks temselve. thishelps make thoes extra few bhp.

they run very shor intake tracs to help make more power so ont have nmuh room fr injectors so they mount tem sprayin straiht down te throught of the throtte bodies! it woks rather well to!

f anyon has seenon one of these things runnin then you can see a cloud of fuel tat seems to sit there abve the intake runners.very sureal lol

there is vid knocking about. will see if i can find it for u all.

thanks Chris

http://video.google.com/videoplay?do...08&q=F1+engine

there you go

Chris.

Wow Chris that video is sweet! To hear that motor wail at 18K RPM is almost melodeous. Thanks for the video.

Mal

no problems mate, infact it was my pleasure to see the vid again! :)

if you type F1 engine in the trusty google video search you will see some intresting stuff! like just how hot a set of F1 headers get and a cossy V8 (from this year) going to 20,002rpm and hitting the limiter! :)

im sooooo jealous of thoes guys! lol

back on topic though, all you have to do is make sure you are getting the fuel into the engine. but where you spray does have some effect! i have heard of no end of 4 cylinder racers over here running 8 injectors! the inner back run a lower rpm (to help driveability and torque) then at higher rpm the second set (about 6-12 inches away form the first set) kick in. this is supposed to give the fuel grater time to mix properly with the air and thus makes more power! and this would make scence on the F1 engines as they spend all their hard lives at 9K plus! lol

thanks Chris. :)

I Have a victor tunnel ram set up like this for sale let me know

:wow:

Set up like what? Could you post some pics?

Mal